.Error403 {  
    font-family: Arial, sans-serif;  
    text-align: center;  
    padding-top: 100px;  
    background-color: #f2f2f2;
    width: 100%;
    height: 100%;
}  

.Error403 h1 {  
    color: #333;  
    font-size: 32px;  
}  

.Error403 p {  
    color: #666;  
    font-size: 18px;  
    margin-top: 20px;  
}  

.Error403 a {  
    color: #007bff;  
    text-decoration: none;  
    font-weight: bold;  
}  

.Error403 a:hover {  
    text-decoration: underline;  
}  